{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical", "Disease"], "input": "By day 30 , sensitivity of both splenic and bone marrow BFU - e of treated animals returned to that observed from cells of infected untreated animals ."}
{"Chemical": [], "Disease": []}